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Last-Modified and If-Modified-Since Headers icon
Possibly abandoned Tested up to 5.7.19 #8 in headers

Last-Modified and If-Modified-Since Headers

This plugin adds the ‘Last-Modified’ header to each post and returns the ‘304 Not Modified’ header to the client without a body in the response if he sent the ‘If-Modified-Since’ header and the post has not changed…

Active installs200+100+ tier
Downloads · 30d121▲ +21% vs prev. 30d
Rating5/52 reviews
Health score33/100At risk
All-time downloads3.1KSince Jul 2021
Support resolved—No recent threads
RequiresWP 5.2.4PHP any
Downloads · 7d35▲ +25% week over week
Our verdict

Consider an alternative

Last-Modified and If-Modified-S… shows warning signs in 2026 — compare the alternatives below before installing. It runs on 200+ sites, is rated 5/5 and was last updated 5 years ago, and scores 33/100 on our health check.

  • Small user base (200+ active installs)
  • Very few reviews so far
  • No update in 5 years
  • Only tested up to WordPress 5.7 (latest is 7.1)

How does it stack up?

Side-by-side on installs, updates, ratings & support

Daily downloads

246Jul 6Aug 19Oct 3
Yesterday7
Daily average (1y)3
Peak day15May 5, 2026
Last 12 months978

Download spikes usually follow a new release — each site that auto-updates counts as a download.

Rankings

Where Last-Modified and If-Modifi… stands today

WordPress.org search rankings

Live position in the plugin search, top 100
KeywordPositionCompeting pluginsCategory
headers >100 10,000 Best headers plugins →
if-modified-since >100 637 Best if-modified-since plugins →
last-modified >100 941 Best last-modified plugins →

Version adoption

Share of active sites per release.

  • 1.0100.0%

Rating breakdown

★★★★★★★★★★ 5 from 2 reviews

  • 5★100.0%
  • 4★0.00%
  • 3★0.00%
  • 2★0.00%
  • 1★0.00%

About Last-Modified and If-Modified-Since Hea…

From the official readme · v1.0

Description

This plugin adds the ‘Last-Modified’ header to each post and returns the ‘304 Not Modified’ header to the client without a body in the response if he sent the ‘If-Modified-Since’ header and the post has not changed since that date.

Installation

  1. Upload ‘Last-Modified and If-Modified-Since Headers’ folder to the ‘plugins’ directory.
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.

For developers

Is this your plugin? Show off the numbers.

Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.

Active installs badge Rating badge Health score badge

Best Last-Modified and If-Modified… alternatives

All headers plugins →
Alternatives
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7 HTTP/1.1 403 Forbidden header on a failed login HTTP/1.1 403 Forbidden header on a failed login Send an "HTTP/1.1 403 Forbidden" header on a failed login instead of the default "HTTP/1.1… by atmosphear 200+ ★★★★★★★★★★ 5 (2) 11 years ago 33
9 Security Hardener Security Hardener Basic hardening: secure headers, login honeypot, user enumeration blocking, generic login… by Marc Armengou 200+ ★★★★★★★★★★ No reviews 2 months ago 65
10 LowerMedia Sticky.js Menus LowerMedia Sticky.js Menus Sticky Headers, Menus, Widgets, Anything! WordPress plugin that integrates sticky.js and… by 9ete 100+ ★★★★★★★★★★ 4.9 (12) 12 years ago 37
11 HT Security HT Security Complete Security Suite: Security Headers, CVE Detection, Core Integrity, Login Alerts… by WPFastSec 100+ ★★★★★★★★★★ 5 (1) 2 months ago 66

FAQ

Last-Modified and If-Modified-Since…: quick answers

Straight answers, pulled from live WordPress.org data.

Live data from WordPress.org · checked Oct 4, 2026

Is Last-Modified and If-Modified-S… free?

Yes. Last-Modified and If-Modified-S… is free to download and use from the official WordPress.org plugin directory.

Is Last-Modified and If-Modified-S… safe to use in 2026?

Last-Modified and If-Modified-S… shows warning signs in 2026 — compare the alternatives below before installing. It runs on 200+ sites, is rated 5/5 and was last updated 5 years ago, and scores 33/100 on our health check.

How many websites use Last-Modified and If-Modified-S…?

Last-Modified and If-Modified-S… is active on 200+ WordPress websites and has been downloaded 3,135 times since it launched in July 2021. It was downloaded 121 times in the last 30 days.

Does Last-Modified and If-Modified-S… work with WordPress 7.1?

Last-Modified and If-Modified-S… is officially tested up to WordPress 5.7.19, while the latest release is 7.1.2. It may still work, but try it on a staging site first.

When was Last-Modified and If-Modified-S… last updated?

The latest version, 1.0, was released on July 20, 2021 (5 years ago).

Who makes Last-Modified and If-Modified-S…?

Last-Modified and If-Modified-S… is developed and maintained by zubovd.

What are the best alternatives to Last-Modified and If-Modified-S…?

The most popular alternatives to Last-Modified and If-Modified-S… are Headers Security Advanced &… (90K+ installs), WP Hide & Security Enhancer (50K+ installs) and Redirect (5K+ installs).

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